Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
App Overview
CodeRunBox IDE
CodeRunBox: Write Any Code Run Anywhere
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 1.0
1 ratings · Below Average
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Differentiate and validate
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for CodeRunBox IDE: map the core Developer Tools workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Expand to include more programming languages and frameworks.
Assumption to check: Limited language support for coding
Validate with people who use this workflow before building.
Hypothesis 2
Design a cleaner, more organized layout with intuitive navigation.
Assumption to check: Cluttered user interface
Validate with people who use this workflow before building.
Hypothesis 3
Optimize code execution and memory management for larger files.
Assumption to check: Poor performance on larger projects
Validate with people who use this workflow before building.
Hypothesis 4
Introduce real-time collaboration tools for coding projects.
Assumption to check: Lack of collaboration features
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
CodeRunBox: Write Any Code Run Anywhere As a mobile IDE ，CodeRunBox designed for smartphones and tablets. Whether you're a seasoned programmer or just starting out, CodeRunBox offers the flexibility and tools to create, learn, and deploy amazing projects effortlessly. Key Features: 1. Code On Mobile * Write Any Code, Run Anywhere * Quick Start With Hot Templates Like AI, Web, and Server. 2. Playground * Support 22+ Languages Compiler * Quick Code and Run , Auto Saving 3. Web Development * Real-time Web Preview in app-browser. * Supports Vue, React, Next.js, Flask... 4. Terminal Integration * Integrated Terminal Access. * Run Any Command Easily. 5. Multi-Device Sync * Sync across iPad and iPhone. * Real-time Project Saving. And so much more! CodeRunBox supports 22 programming languages for versatile coding: - Java - Python - C - C++ - C# - Dart - Go - JavaScript - TypeScript - Bash - PHP - R - Shell - Swift - Ruby - Kotlin - Lua - Haskell - Rust - Scala - Julia - Perl Quick project templates to jumpstart your development: • React (Vite, TypeScript) • Vue (Vite, TypeScript) • Next (Vite, TypeScript) • Angular (Vite, TypeScript) • React Native (Expo) • Express (Node.js, TypeScript) • Express (Node.js, JavaScript) • Simple HTTP server (Python) • Flask Web App (Python) • Simple HTTP server (Java) • Simple HTTP server (PHP) And so much more in the way! Important Links: Terms Of Service: https://docs.coderunbox.com/docs/privacy Privacy Policy: https://docs.coderunbox.com/docs/terms-of-service
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
React Native
Expo
zustand
react-native-syntax-highlighter
axios
react-navigation
BUILD KIT DIFFICULTY
Advanced
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.
